Beneficiation of Ga from alunite concentrates by selective acid leaching and alkaline precipitation

• Autorzy: Zhu Mao-Lan , Chen Hang , Zhong Shui-Ping , Huang Zhong-Sheng , Chen Xi , Hu Zhi-Biao

Identyfikatory

DOI

10.5277/ppmp19024

• Języki publikacji: EN

Abstrakty

EN

In this study beneficiation of Ga from alunite ore was investigated. The effects of the calcination temperature, H₂SO₄ concentration, leaching temperature and liquid-solid ratio on the dissolution characteristic of Ga, K and Al were studied. The results showed that increasing the calcination temperature, H₂SO₄ concentration and leaching temperature can improve the solubility of K and Al. However, higher H₂SO₄ concentration and lower leaching temperature can improve the dissolution of Ga, which was beneficial to recovery of Ga. On the basis of the solubility difference in H₂SO₄, a two-stage process of selective acid leaching and alkali precipitation of Ga was proposed. The concentration of Ga was increased significantly from 54 g/t in alunite ore to 4100 g/t in alkali precipitation product. The major elements of Al and K in alunite were recovered as the alum crystal with a purity of 99.62%.

Słowa kluczowe

EN

gallium; selective leaching; precipitation; alunite concentrate

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2019
• Tom: Vol. 55, iss. 4
• Strony: 1028--1038
• Opis fizyczny: Bibliogr. 23 poz., rys., tab., wz.

Twórcy

autor

Zhu Mao-Lan

• College of Materials Science and Engineering, Xiamen Universityof Technology, Xiamen, 361024, China

autor

Chen Hang

• College of Zijin Mining, Fuzhou University, Fuzhou, 350108, China

autor

Zhong Shui-Ping

• College of Zijin Mining, Fuzhou University, Fuzhou, 350108, China

autor

Huang Zhong-Sheng

• School of Metallurgy and Environment, Central South University, Changsha 410083, China

autor

Chen Xi

• School of Chemistry and Materials, Longyan University, Longyan, 364012, China

autor

Hu Zhi-Biao

• School of Chemistry and Materials, Longyan University, Longyan, 364012, China

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).